C# | Math.Abs() Method | Set – 2

C# | Math.Abs() Method | Set – 1

In C#, Abs() is a Math class method which is used to return the absolute value of a specified number. This method can be overload by passing the different type of parameters to it. There are total 7 methods in its overload list.

1. Math.Abs(Decimal)
2. Math.Abs(Double)
3. Math.Abs(Int16)
4. Math.Abs(Int32)
5. Math.Abs(Int64)
6. Math.Abs(SByte)
7. Math.Abs(Single)

Math.Abs(Int64)

This method is used to return the absolute value of a 64-bit signed integer.

Syntax:

public static long Abs (long val);

Parameter:

val: It is the required number which is greater than Int64.MinValue, but less than or equal to Int64.MaxValue of type System.Int64.

Return Type: It returns a 64-bit signed integer say r, such that 0 ≤ r ≤ Int64.MaxValue.

Exception: This method will give OverflowException if the value of val is equals to Int64.MinValue.

Example:

// C# Program to illustrate the
// Math.Abs(Int64) Method
using System;

class Geeks {

    // Main Method
    public static void Main()
    {

        // Taking long values
        long[] val = {Int64.MaxValue, 78345482, -4687985, 0};

        // using foreach loop
        foreach(long value in val)

            // Displaying the result
            Console.WriteLine("Absolute value of {0} = {1}",
                                    value, Math.Abs(value));
    }
}

Output:

Absolute value of 9223372036854775807 = 9223372036854775807
Absolute value of 78345482 = 78345482
Absolute value of -4687985 = 4687985
Absolute value of 0 = 0

Math.Abs(SByte)

This method is used to return the absolute value of an 8-bit signed integer.

Syntax:

public static sbyte Abs (sbyte val);

Parameter:

val: It is the required number which is greater than SByte.MinValue, but less than or equal to SByte.MaxValue of type System.SByte.

Return Type: It returns a 8-bit signed integer say r, such that 0 ≤ r ≤ SByte.MaxValue.

Exception: This method will give OverflowException if the value of val is equals to SByte.MinValue.

Example:

// C# Program to illlustrate the
// Math.Abs(SByte) Method
using System;

class Geeks {

    // Main Method
    public static void Main()
    {

        // Taking SByte values
        sbyte[] sb = {SByte.MaxValue, 45, -41, 0};

        // using foreach loop
        foreach(sbyte value in sb)

            // Displaying the result
            Console.WriteLine("Absolute value of {0} = {1}",
                                    value, Math.Abs(value));
    }
}

Output:

Absolute value of 127 = 127
Absolute value of 45 = 45
Absolute value of -41 = 41
Absolute value of 0 = 0

Math.Abs(Single)

This method is used to return the absolute value of a single-precision floating-point number.

Syntax:

public static float Abs (float val);

Parameter:

val: It is the required number which is greater than or equal to Single.MinValue, but less than or equal to MaxValue of type System.Single.

Return Type: It returns a single-precision floating-point number say r, such that 0 ≤ r ≤ Single.MaxValue.

Note:

• If val is equal to NegativeInfinity or PositiveInfinity, the return value will be PositiveInfinity.
• If the val is equal to NaN then return value will be NaN.

Example:

// C# Program to illlustrate the
// Math.Abs(Single) Method
using System;

class Geeks {

    // Main Method
    public static void Main()
    {

        float nan = float.NaN;

        // Taking float values
        float[] fl = {float.MinValue, 127.58f, 0.000f,
                    7556.48e10f, nan, float.MaxValue};

        // using foreach loop
        foreach(float value in fl)

            // Displaying the result
            Console.WriteLine("Absolute value of {0} = {1}",
                                    value, Math.Abs(value));
    }
}

Output:

Absolute value of -3.402823E+38 = 3.402823E+38
Absolute value of 127.58 = 127.58
Absolute value of 0 = 0
Absolute value of 7.55648E+13 = 7.55648E+13
Absolute value of NaN = NaN
Absolute value of 3.402823E+38 = 3.402823E+38

Reference: https://docs.microsoft.com/en-us/dotnet/api/system.math.abs?view=netframework-4.7.2